USGS · 07021000

CASTOR RIVER

USGS · 07021000LIVE

Castor River at Zalma, MO

BOLLINGER COUNTY, MO37.1466°N, -90.0755°W Updated 19 hr ago

FLOW RATE

918cfs

GAUGE HT

5.49ft

AIR TEMP

86°F

WIND

9mph NNE

FISH INDEX

56SCORE / 100

GOOD · 3 OF 5

1D 7D 30D 1YR

Flow Rate Historical Avg

MEDIAN FLOW RATE · 1 YEAR

918cfs 42.0% vs avg

Optimal band: 148–200 cfs

PERIOD HIGH

7,336cfs

PERIOD LOW

66cfs

RUNNABLE

24%

last 1 year in band

Gauge Height

5.49ft

Precipitation History

Your History · Castor River at Zalma, MO

Track your history

SPONSORED

Weather Conditions

WEATHER CONDITIONS

TODAY

87°

72°

MON

89°

71°

TUE

86°

70°

WED

88°

71°

THU

93°

72°

FRI

94°

74°

SAT

99°

74°

TIME

SUN

NOW

MON

TUE

WED

THU

FRI

TEMP

hourly forecast

84°

mild

84°

81°

78°

77°

75°

74°

73°

72°

71°

74°

77°

80°

83°

85°

86°

87°

88°

89°

88°

87°

84°

81°

78°

76°

75°

74°

73°

72°

70°

72°

75°

79°

81°

84°

86°

84°

83°

80°

78°

75°

73°

72°

71°

72°

74°

77°

80°

84°

86°

87°

88°

87°

88°

87°

84°

80°

77°

76°

75°

74°

73°

72°

75°

79°

83°

86°

88°

90°

89°

91°

93°

89°

85°

83°

79°

77°

76°

75°

74°

76°

79°

83°

87°

90°

93°

94°

WIND

mph · gust · dir

6mph NNE

G 12 mph

G12

NNE

G10

NNE

G10

NNW

G11

G12

G13

G12

G11

G14

NNE

G14

NNE

G14

NNE

G14

NNE

G17

NNE

G17

NNE

G16

G15

G14

NNE

G15

NNE

G16

NNE

G10

G11

G14

NNE

G14

NNE

G13

NNE

G12

NNE

G13

NNE

G14

NNE

G15

NNE

G16

NNE

G18

NNE

G18

NNE

G16

G15

ENE

G15

ENE

G15

ENE

G14

ENE

G15

ENE

G15

ENE

G13

ENE

G15

G16

G15

G14

G10

ENE

G11

ENE

G10

ESE

SSE

SSW

NNW

ESE

SSE

SSW

WSW

WNW

NNW

WNW

NNE

ENE

SSE

PRECIP

chance %

32%

29%

CLOUDS

cover %

clear

23%

13%

23%

21%

86%

90%

78%

35%

68%

32%

16%

14%

26%

100%

18%

21%

100%

68%

35%

87%

67%

100%

53%

34%

45%

51%

53%

57%

21%

22%

11%

33%

85%

48%

68%

100%

63%

100%

95%

100%

43%

25%

15%

100%

94%

74%

59%

60%

67%

72%

PRESSURE

hPa · trend

1005

TemperatureWind / GustsPrecipitationCloud coverPressure

Nowscroll →

FISH INDEX

Temperature

Too Hot

Wind

Light

Pressure

Stable

Moon Phase

Average

DAYLIGHT

SUNRISE

05:50 AM

SUNSET

08:21 PM

14H 31M OF DAYLIGHT

MOON PHASE

Waning Crescent

4% illuminated

Station Location

37.1466, -90.0755

Loading map…

DATA · USGS · NOAA · NWSUPDATED 2026-07-12 00:00 UTC

Site #07021000·USGS

Create a free account to save favorites, set flow alerts, and track conditions